Shot:
they are a legitimate threat to freedom and to anti-authoritarian leftists,
Chaser:
we shouldn't allow these people to exist in the internet free
https://old.reddit.com/r/tankiejerk/comments/197l9ik/tankie_is_not_offensive_anymore/
For real, and even among anarchists on the ground I've only met like 3 who used the word tankie. All three were weird though. One guy said the library next to where we hand out food is a "tankie library" because there were Marx and Lenin books in the socialism section. Another guy used the term tankie but I don't think he knew what it meant, since he'd refer to the cops as tankies. The other person would say tankie as shorthand for militant atheists.
But in all those three cases those people still hand out food and help people so they're light-years ahead of the bozos on r*ddit